Deaths attributed to heat increased by 87% last summer in Spain, with a total of 3,832 deaths linked to excessive temperatures and episodes of extreme heat, representing an increase of 73% compared to 2024, according to the final report of the Heat Plan of the Ministry of Health, which also confirms 25 deaths from heatstroke, one of them in Mallorca.
In the Balearics, between 16 May and 30 September, there were eight episodes of extreme heat: four in the interior of Mallorca, three in Ibiza and Formentera, and one in the south of Mallorca. In the summer of 2024, a total of five episodes were reported. The only death from heatstroke on the islands was a 62-year-old man who died in southern Mallorca, diagnosed with hyperthermia and dehydration.
According to the latest data from the Daily Mortality Monitoring System (MoMo), between 16 May and 30 September 2025, an estimated 3,832 deaths were caused by excessive temperatures throughout Spain (compared to 2,042 in 2024). 96% of those who died were over 65 and more than half were over 85.
This figure reflects the overall impact of heat on public health, beyond clinically confirmed cases of heatstroke. In fact, during this period, 25 deaths from heatstroke were recorded, most of them in people with risk factors such as chronic diseases, use of heat-sensitive medication, outdoor work or vulnerable social situations (people living alone or in homes without air conditioning).
During the summer, 870 level 3 episodes (high risk due to extreme heat) were recorded, representing an increase of 73% compared to the 501 episodes in the same period in 2024. The most critical month was August, with 2,184 deaths, followed by July (1,060), June (407), September (173) and the second half of May (8). By gender, 2,276 women (59.39%) and 1,556 men (40.61%) died.
The Department of Health points out that these figures are based on statistical models that estimate the excess mortality attributable to heat, so they do not correspond directly to individual clinical diagnoses and may be revised in future official reports.
As for the Ministry’s free heat alert service, which will remain operational until 30 September, 101,685 SMS messages and 37,631 email notifications were sent, with daily, personalised information on the level of heat risk in each geographical area.
The Balearic government has concluded the campaign by the Balearic Institute for Occupational Health and Safety (Ibassal) for the prevention of occupational risks arising from high temperatures, with 444 advisory visits to companies to prevent, above all, heatstroke in construction and industry.
According to a statement issued by the government on Friday, Ibassal, which reports to the Regional Ministry of Labour, Civil Service and Social Dialogue, visited 233 companies in Mallorca, 102 in Menorca and 109 in Ibiza and Formentera.
In addition, this campaign has included communication actions with informative materials that have been disseminated through social networks, emails and in busy places such as the Palma Intermodal Station. During the campaign, Ibassal has registered two complaints for ‘thermal non-compliance in indoor spaces’.